Mop dehydrating device

ABSTRACT

A mop dehydrating device includes a case having a space and a recess. A driving unit is located in the recess and has a base with two lugs extending therefrom. An operation unit and a transmission member are connected between the two lugs. The operation unit has an operation pedal which protrudes from the opening. A curved or straight rack is connected to the operation unit and has teeth which have a metal layer connected thereto. The transmission member has a transmission gear which is engaged with the teeth of the rack. A spinning unit has a shaft which extends through the inside of the space and driven by the transmission member. A bracket is connected to the shaft and spins by operating the operation pedal.

FIELD OF THE INVENTION

The present invention relates to a dehydrating device, and moreparticularly, to a mop dehydrating device for easily dehydrate the mopand having strong transmission mechanism.

BACKGROUND OF THE INVENTION

A conventional mop dehydrating device is disclosed in Taiwan UtilityPatent No. M338634 and generally includes a case, an installation unit,a spinning unit, a transmission unit and an operation unit, wherein theinstallation unit is connected to the bottom of the case and theoperation unit is pivotably connected to the installation unit. Thetransmission unit is connected to the installation unit and includes arack, a rail, a first gear and a second gear. The operation unit drivesthe rack. The spinning unit has a transmission gear and a bucket. Thetransmission gear extends through the case and is connected to thebracket in the case. By treading the operation unit, the rack is movedto drive the first gear and the second gear, and the transmission gearto spin the bracket.

However, the gears are made by plastic and easily worn out after aperiod of time of operation, so that the driving action between thegears may fail or the engagement between the gears is loosened and notreliable. Therefore, the bracket cannot spin as desired and the mopcannot be dehydrated.

The present invention intends to provide a mop dehydrating device whichimproves the shortcomings of the conventional device.

SUMMARY OF THE INVENTION

The present invention relates to a mop dehydrating device and comprisesa case having a space defined therein and communicating with the opentop of the case. A recess is defined in the lower portion of the caseand an opening is defined in the outside of the case and communicateswith the recess. A driving unit is located in the recess and has a basewith two lugs extending therefrom. An operation unit and a transmissionmember are connected between the two lugs. The operation unit has anoperation pedal which protrudes from the opening. A rack is connected ona side of the operation unit and has teeth with a metal layer connectedthereto. The transmission member has a transmission gear which isengaged with the teeth of the rack. A spinning unit has a shaft whichextends through an inside of the space and driven by the transmissionmember.

The primary object of the present invention is to provide a mopdehydrating device wherein the teeth of the rack have a metal layer soas to prevent being worn out during operation.

The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawingswhich show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the mop dehydrating device of thepresent invention;

FIG. 2 is an exploded view to show the mop dehydrating device of thepresent invention;

FIG. 3 shows the driving unit of the mop dehydrating device of thepresent invention;

FIG. 4 is a cross sectional view to show the driving unit and the shaftof the spinning unit of the mop dehydrating device of the presentinvention;

FIG. 5 is a partial cross sectional view to show that the transmissiongear is engaged with the teeth of the rack, wherein a metal layer ismounted to the plastic teeth;

FIG. 6 is a partial cross sectional view to show that the transmissiongear is engaged with the metal teeth of the rack of the presentinvention;

FIG. 7 is a cross sectional view to show that the transmission gear isengaged with the straight rack which has metal layer on the plasticteeth, and

FIG. 8 is a cross sectional view to show that the transmission gear isengaged with the straight rack which has metal teeth.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 6, the mop dehydrating device of the presentinvention comprises a case 10, driving unit 20 and a spinning unit 30.

The case 10 has a space 11 defined therein which communicates with anopen top of the case 10, and a recess 12 is defined in the lower portionof the case 10 and an opening 13 is defined in the outside of the case10 and communicates with the recess 12.

The driving unit 20 is located in the recess 12 and includes a base 21and two lugs 22 extend from the base 21. An operation unit 23 and atransmission member 24 are connected between the two lugs 22. Thetransmission member 24 has a first bevel gear 241. The operation unit 23includes a pivot 230 which is pivotably connected between the two lugs22 and a torsion spring 25 is connected between the operation unit 23and one of the two lugs 22. The operation unit 23 has an operation pedal231 which protrudes from the opening 13. A rack 232 is connected on aside of the operation unit 23 and has teeth 233 formed thereon. The rack232 is a curved rack (FIG. 5) or a straight rack (FIG. 7). The teeth 233are made by plastic and a metal layer 234 is connected to the teeth 233as shown in FIGS. 5 and 7. The transmission member 24 has a transmissiongear 240 which is engaged with the metal layer 234 on the teeth 233 ofthe rack 232. The teeth 233 can also be made by metal such as shown inFIGS. 6 and 8, then the transmission gear 240 is directly engaged withthe teeth 233 of the rack 232.

The spinning unit 30 has a shaft 31 which extends through an inside ofthe space 11 and has a bracket 32 connected to the top end thereof, thebracket 32 is located in the space 11 of the case 10 and includesmultiple holes 320 defined through the wall thereof. A one-way bearing33 is mounted to the shaft 31 and a second bevel gear 34 is mounted tothe one-way bearing 33. The first bevel gear 241 drives the second bevelgear 34.

When in use, the user treads the operation pedal 231 so that theoperation unit 23 is pivoted about the pivot 230 and the torsion spring25 is expanded. The transmission gear 240 is rotated by the rack 232 andthe first bevel gear 241 drives the second bevel gear 242 such that theshaft 31 and the bracket 32 spin quickly. The mop (not shown) in thebracket 32 is dehydrated by the eccentric force. When the operationpedal 231 is released, the torsion spring 25 returns the operation pedal231 of the operation unit 23. Thanks to the one-way bearing 33, theshaft 31 continuously spins and the bracket 32 keeps on spinning bytreading the operation pedal 231 repeatedly.

Because the teeth 233 of the rack 232 has the metal layer 234 connectedthereon as shown in FIG. 5, or the teeth 233 of the rack 232 are made bymetal as shown in FIG. 6, the engagement between the transmission gear240 and the teeth 233 of the rack 232 does not wear out the teeth 233and the shortcoming of the conventional mop dehydrating device isimproved.

While we have shown and described the embodiment in accordance with thepresent invention, it should be clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A mop dehydrating device comprising: a case having a space definedtherein which communicates with an open top of the case, a recessdefined in a lower portion of the case and an opening defined in anoutside of the case and communicating with the recess; a driving unitlocated in the recess and having a base, two lugs extending from thebase, an operation unit and a transmission member connected between thetwo lugs, the operation unit having an operation pedal which protrudesfrom the opening, a rack connected on a side of the operation unit andhaving teeth with a metal layer connected thereto, the transmissionmember having a transmission gear which is engaged with the teeth of therack, and a spinning unit having a shaft which extends through an insideof the space and driven by the transmission member.
 2. The mopdehydrating device as claimed in claim 1, wherein the operation unitincludes a pivot which is pivotably connected between the two lugs and atorsion spring is connected between the operation unit and one of thetwo lugs.
 3. The mop dehydrating device as claimed in claim 1, whereinthe shaft of the spinning unit has a bracket connected thereto which islocated in the space of the case, the bracket includes multiple holesdefined through a wall thereof, a one-way bearing is mounted to theshaft, the transmission member has a first bevel gear and a second bevelgear is mounted to the one-way bearing, the first bevel gear drives thesecond bevel gear.
 4. The mop dehydrating device as claimed in claim 1,wherein the rack is a curved rack or a straight rack.
 5. A mopdehydrating device comprising: a case having a space defined thereinwhich communicates with an open top of the case, a recess defined in alower portion of the case and an opening defined in an outside of thecase and communicating with the recess; a driving unit located in therecess and having a base, two lugs extending from the base, an operationunit and a transmission member connected between the two lugs, theoperation unit having an operation pedal which protrudes from theopening, a rack connected on a side of the operation unit and havingteeth with a metal layer connected thereto, the transmission memberhaving a transmission gear which is engaged with the teeth of the rack,the transmission member having a first bevel gear, and a spinning unithaving a shaft which extends through an inside of the space, a bracketconnected to the shaft of the spinning unit and located in the space ofthe case, the bracket including multiple holes defined through a wallthereof, a one-way bearing mounted to the shaft, a second bevel gearmounted to the one-way bearing and driven by the first bevel gear. 6.The mop dehydrating device as claimed in claim 5, wherein the operationunit includes a pivot which is pivotably connected between the two lugsand a torsion spring is connected between the operation unit and one ofthe two lugs.
 7. The mop dehydrating device as claimed in claim 5,wherein the shaft of the spinning unit has a bracket connected theretowhich is located in the space of the case, the bracket includes multipleholes defined through a wall thereof, a one-way bearing is mounted tothe shaft, the transmission member has a first bevel gear and a secondbevel gear is mounted to the one-way bearing, the first bevel geardrives the second bevel gear.
 8. The mop dehydrating device as claimedin claim 5, wherein the rack is a curved rack or a straight rack.